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net: sched: remove unneeded tcf_em_tree_change 

Since tcf_em_tree_validate could be always called on a newly created
filter, there is no need for this change function.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2017-08-04 14:28:57 +02:00 committed by David S. Miller
parent f7ebdff757
commit 4ebc1e3cfc
4 changed files with 7 additions and 34 deletions
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21
include/net/pkt_cls.h
View File

@ -332,26 +332,6 @@ int tcf_em_tree_dump(struct sk_buff *, struct tcf_ematch_tree *, int);
int __tcf_em_tree_match(struct sk_buff *, struct tcf_ematch_tree *,
struct tcf_pkt_info *);
/**
* tcf_em_tree_change - replace ematch tree of a running classifier
*
* @tp: classifier kind handle
* @dst: destination ematch tree variable
* @src: source ematch tree (temporary tree from tcf_em_tree_validate)
*
* This functions replaces the ematch tree in @dst with the ematch
* tree in @src. The classifier in charge of the ematch tree may be
* running.
*/
static inline void tcf_em_tree_change(struct tcf_proto *tp,
struct tcf_ematch_tree *dst,
struct tcf_ematch_tree *src)
{
tcf_tree_lock(tp);
memcpy(dst, src, sizeof(*dst));
tcf_tree_unlock(tp);
}
/**
* tcf_em_tree_match - evaulate an ematch tree
*
@ -386,7 +366,6 @@ struct tcf_ematch_tree {
#define tcf_em_tree_validate(tp, tb, t) ((void)(t), 0)
#define tcf_em_tree_destroy(t) do { (void)(t); } while(0)
#define tcf_em_tree_dump(skb, t, tlv) (0)
#define tcf_em_tree_change(tp, dst, src) do { } while(0)
#define tcf_em_tree_match(skb, t, info) ((void)(info), 1)
#endif /* CONFIG_NET_EMATCH */

4
net/sched/cls_basic.c
View File

@ -130,7 +130,6 @@ static int basic_set_parms(struct net *net, struct tcf_proto *tp,
{
int err;
struct tcf_exts e;
struct tcf_ematch_tree t;
err = tcf_exts_init(&e, TCA_BASIC_ACT, TCA_BASIC_POLICE);
if (err < 0)
@ -139,7 +138,7 @@ static int basic_set_parms(struct net *net, struct tcf_proto *tp,
if (err < 0)
goto errout;
err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &t);
err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &f->ematches);
if (err < 0)
goto errout;
@ -149,7 +148,6 @@ static int basic_set_parms(struct net *net, struct tcf_proto *tp,
}
tcf_exts_change(tp, &f->exts, &e);
tcf_em_tree_change(tp, &f->ematches, &t);
f->tp = tp;
return 0;

4
net/sched/cls_cgroup.c
View File

@ -76,7 +76,6 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
struct nlattr *tb[TCA_CGROUP_MAX + 1];
struct cls_cgroup_head *head = rtnl_dereference(tp->root);
struct cls_cgroup_head *new;
struct tcf_ematch_tree t;
struct tcf_exts e;
int err;
@ -112,14 +111,13 @@ static int cls_cgroup_change(struct net *net, struct sk_buff *in_skb,
goto errout;
}
err = tcf_em_tree_validate(tp, tb[TCA_CGROUP_EMATCHES], &t);
err = tcf_em_tree_validate(tp, tb[TCA_CGROUP_EMATCHES], &new->ematches);
if (err < 0) {
tcf_exts_destroy(&e);
goto errout;
}
tcf_exts_change(tp, &new->exts, &e);
tcf_em_tree_change(tp, &new->ematches, &t);
rcu_assign_pointer(tp->root, new);
if (head)

12
net/sched/cls_flow.c
View File

@ -389,7 +389,6 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
struct nlattr *opt = tca[TCA_OPTIONS];
struct nlattr *tb[TCA_FLOW_MAX + 1];
struct tcf_exts e;
struct tcf_ematch_tree t;
unsigned int nkeys = 0;
unsigned int perturb_period = 0;
u32 baseclass = 0;
@ -432,13 +431,13 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
if (err < 0)
goto err1;
err = tcf_em_tree_validate(tp, tb[TCA_FLOW_EMATCHES], &t);
if (err < 0)
goto err1;
err = -ENOBUFS;
fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
if (!fnew)
goto err1;
err = tcf_em_tree_validate(tp, tb[TCA_FLOW_EMATCHES], &fnew->ematches);
if (err < 0)
goto err2;
err = tcf_exts_init(&fnew->exts, TCA_FLOW_ACT, TCA_FLOW_POLICE);
@ -512,7 +511,6 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
(unsigned long)fnew);
tcf_exts_change(tp, &fnew->exts, &e);
tcf_em_tree_change(tp, &fnew->ematches, &t);
netif_keep_dst(qdisc_dev(tp->q));
@ -554,8 +552,8 @@ static int flow_change(struct net *net, struct sk_buff *in_skb,
err3:
tcf_exts_destroy(&fnew->exts);
tcf_em_tree_destroy(&fnew->ematches);
err2:
tcf_em_tree_destroy(&t);
kfree(fnew);
err1:
tcf_exts_destroy(&e);